Marble Chips Specific Gravity and Refractive Index Control
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Solution Overview
Problem
Existing artificial marble products face issues with transparent marble chips having a lower specific gravity than the resin matrix, leading to uneven distribution and surface irregularities during the curing process, and difficulties in achieving uniform patterns and high refractive index.
Innovation Solution
Development of marble chips with a specific gravity of 1.45 to 1.75, similar to the matrix material, and high refractive index, along with enhanced cohesion and abrasion properties, using a resin composition comprising a halogenated alkoxylated di(meth)acrylate oligomer and reactive monomers, allowing for uniform distribution and continuous manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent marble chips with lower specific gravity than the resin matrix are used, then the artificial marble can achieve a bright and elegant jewel-like appearance, but the marble chips float or migrate to the upper surface during curing, resulting in non-uniform dispersion
Solution Approach 1:
The patent applies the anti-weight principle by adding inorganic fillers (barium sulfate, aluminum trihydrate, silica) to the transparent marble chips to increase their specific gravity. This counteracts the buoyancy force that causes the chips to float, enabling them to remain uniformly dispersed throughout the resin matrix during the curing process while maintaining their transparency and jewel-like appearance.
Solution Approach 2:
The patent creates a composite material by combining transparent resin-based marble chips with inorganic fillers. This composite structure allows the chips to achieve both the desired optical properties (transparency, jewel-like appearance) and the necessary physical properties (increased specific gravity for uniform dispersion) that cannot be obtained with a single material.
2Stability of the object's composition
If inorganic fillers are added to increase the specific gravity of marble chips, then the chips can be uniformly distributed throughout the matrix, but the transparency of the marble chips is significantly deteriorated
Solution Approach 1:
The patent applies parameter changes by carefully controlling the type, amount, and size distribution of inorganic fillers added to the transparent marble chips. By optimizing these parameters (using barium sulfate with specific gravity 4.5, limiting filler content to maintain transparency, and controlling particle size), the patent achieves the necessary specific gravity increase for uniform dispersion while minimizing the deterioration of transparency.
3Illumination intensity
If engineered stones with different hardness than the matrix are used, then the artificial marble can provide good transparency, but sanding the plate results in an uneven surface
Solution Approach 1:
The patent applies the homogeneity principle by ensuring that the transparent marble chips have hardness properties matched to the acrylic resin matrix. This homogenization of mechanical properties across different components allows the entire artificial marble structure to be sanded uniformly, achieving a flat and smooth surface without the unevenness that would result from hardness mismatches between chips and matrix.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures uniform distribution of marble chips within the matrix, providing a smooth and flat surface, excellent chemical resistance, and a jewel-like appearance, while maintaining the same appearance and texture as engineered stone, with improved thermal processability and surface treatability.
Implementation Method 1
curing a resin composition comprising a binder and a reactive monomer, wherein the binder comprises a halogenated alkoxylated di(meth)acrylate oligomer
Implementation Method 2
pulverizing the cured article
Implementation Method 3
marble chips with a specific gravity of 1.45 to 1.75, similar to the matrix material
Implementation Method 4
high refractive index, along with enhanced cohesion and abrasion properties
Data Source
AI summary
The present invention provides marble chips produced by hardening or molding a resin composition including a binder and a reactive monomer, wherein the binder comprises a halogenated alkoxylated diacrylate oligomer. The marble chips of the present invention can be formed into a uniform pattern, so that an artificial marble made using the marble chips of the present invention may have an outer appearance and texture similar to that of engineered stone.